On 4/10/2017 4:42 PM, Chuck Guzis via cctalk wrote:
On 04/10/2017 11:41 AM, Dave via cctalk wrote:
I have a Harris RTX-2000 based system control
board for a long
defunct system. The board worked when removed more than 20 years ago
in the mid 90's. The RTX-2000 is a stack-based processor designed
for running FORTH. I think it was designed by Phil Koopman based on
his graduate work. The board is a 16-bit ISA board. It was part of
an MRI system that ran a version of MPE forth with a C-to-FORTH
compiler (actually a C-like variant) that spits out a 16-bit FORTH
variant with some embedded RTX-2000 code.
That is a bit of a surprise--in my experience it takes very little code
to support Forth on any processor--that someone would build a dedicated
chip for it is unusual.
Were there any microprocessor chips that attempted to mimic the
Burroughs B5000 series and natively execute Algol of any flavor?
No, but Western Digital implemented the UCSD P-machine in hardware
selling it as the Pascal Microengine. I always wanted on of those
but I fear few have survived the scrap yard.
bill